<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Controller
 * @subpackage Zend_Controller_Action_Helper
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: AutoCompleteDojo.php 18951 2009-11-12 16:26:19Z alexander $
 */

/**
 * @see Zend_Controller_Action_Helper_AutoComplete_Abstract
 */
require_once 'Zend/Controller/Action/Helper/AutoComplete/Abstract.php';

/**
 * Create and send Dojo-compatible autocompletion lists
 *
 * @uses       Zend_Controller_Action_Helper_AutoComplete_Abstract
 * @category   Zend
 * @package    Zend_Controller
 * @subpackage Zend_Controller_Action_Helper
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Controller_Action_Helper_AutoCompleteDojo extends Zend_Controller_Action_Helper_AutoComplete_Abstract
{
	/**
	 * Validate data for autocompletion
	 *
	 * Stub; unused
	 *
	 * @param  mixed $data
	 * @return boolean
	 */
	public function validateData($data)
	{
		return true;
	}

	/**
	 * Prepare data for autocompletion
	 *
	 * @param  mixed   $data
	 * @param  boolean $keepLayouts
	 * @return string
	 */
	public function prepareAutoCompletion($data, $keepLayouts = false)
	{
		if (!$data instanceof Zend_Dojo_Data) {
			require_once 'Zend/Dojo/Data.php';
			$items = array();
			foreach ($data as $key => $value) {
				$items[] = array('label' => $value, 'name' => $value);
			}
			$data = new Zend_Dojo_Data('name', $items);
		}

		if (!$keepLayouts) {
			require_once 'Zend/Controller/Action/HelperBroker.php';
			Zend_Controller_Action_HelperBroker::getStaticHelper('viewRenderer')->setNoRender(true);

			require_once 'Zend/Layout.php';
			$layout = Zend_Layout::getMvcInstance();
			if ($layout instanceof Zend_Layout) {
				$layout->disableLayout();
			}
		}

		$response = Zend_Controller_Front::getInstance()->getResponse();
		$response->setHeader('Content-Type', 'application/json');

		return $data->toJson();
	}
}
